Manufacture of paper and like bags.



B. ROBINSON, W. J. BBNWBLLJB. (7. v GROVES & O. HARVEY.

nuurmm: mu nu ma ma; D 985,285.

APPIJOh'HOI "LID Ill. '0. I...

Patented Feb. 28. 1911.

UNITED STATES PATENT OFFICE.

anwann nomasoa, wnmax JOHN BENWELL. nnwaan CHARLES oaovns. m: eaonen nanvu. or nars'ron, ENGLAND. AssmNons m E. s. awn A. nonmson LIIITID, O! BI IISTOL, ENGLAND-:-

IANUI'AOTUII OI PAPER AND LIKE BAGS.

lpeelleattea of Letters latent.

l'nteutetl Feb. 28. 19".

Application tiled Iareh so. am. mm 110. 486.788.

oua plllltetl web or roll of paper or similar material.

With bags which are reqnmalto he printed, made by machine from eontmuous voila.

' it has hitherto been the practice to print them separately, on a printing tnaehine after making, or clue to print them With a nap illmentary printing apparatus tlxed to the mg making machine.

The first method is a commu-atively slow and expensive operation, espeeially when large quantities have to be dealt 'ltll. and

in the aeeoud ntethod, printing during the 'prm'esa of making by a mtpplementnry |ll'lIlt-.

mg apparatus. 0 great vurietiea ot' Ft \'le-' thatam possible on a separate printing maehiue cannot be worked, and the enahrv ol' tlte printing is generally mneh interior exre 1 in one or two styles.

The primary object of the preheat. invention in to enable bags to he made in any ordinary hag making machine diu'et from a wel orroll of pape|"\\'hich'hai4 been previously printed with the. required matter or dieai n. it it previously printed web were am y fed into an ordinary hag making mae nte it would be found that owing to the creek or lag which would oeenr. the printed tnaeription or other impre aion would he rer noon out of )Oatltitllt or register, and the machine woul have to be repeatedly stopped to allow ot the Well being reset. failure. The secondary object, therefore of the )I'Qfit'lll invention in to avoid the above plen- .ioaed ditlienlty and in melt at nmnner that This method would he a practical the correct register can he maintained during the continued running of the machine.

The imention eonaieto easeutially in the eomhination with a hug making machine of means for accelerating or retarding the rate of feed aeeording as the web lugs or creepso that the eorreet register of the .printed or other impression on the bags may he maintained.

'l'heaaeeom )anyiug drawings. illustrate two nt'ndes o eurrylng the inr'ention into ell'eet.

Figure l is a diagram of the various rollera of one form of ha making maelnne illuatruting the eourae olthe web as far an the folding and enttingo x'ratimm are eoneerued. Figs. and 3 are l'tS])L'(.tl\t!l a side elevation and plan illustrating the mode of earrying out the invention.

In earryiug out the invention a bag making machine of the tvpe illustrated in the roll. a. of prertoualy springs. It. and then over a guide roller. 0'.

to the folding wheels. k. From the latter the partially folded web is passed on to the usual folding devices including a metal folder. I. During the folding operation the well paw-a over a metal former. a. which terillllltttt'a in a toothed edge I. Above the latter is a toothed edge, a. carried hvau adjustahle'hnr. e. A cutting bar or 'lmit'e. :u. i uda ited to shar ily strike the web adjaeent to t te toothed H gen. t u. in order to cut the web into the pro-determined lengths for forming the hugs. The web is drawn alon over the former. a, under the various oh ,ing devices and over a guide roller, a. hr

tueuua of two aeta of drawing rollera. 'lhetie sets of drawing rollera 'eompriae rollera 1 and 2, and upper rollers. ti 3 and 4 4. The rollers, 33, 3, and 4. 4. are preferably provided with projecti ridges of rubber, and various forms miil dimensions of rollers, 3, 3, and "l. 4. may be kept in stock and exchanged aecording to the type of paper that is to he fed or drawn, forward.

From the drawing rollers the severed cally in big. I.

Zitl tivaly. U out-te aha v integrally with the toothed wheel, ttimcshes with bevel piuione. 80, carried on radial pins the drawing ro era,it and 9. at the requisite lengths of web lltts'n over a plate. three roller. IL". 3 and Il arranged vcrv closely ttwctbel' as illustrated dingranunnti- ,I the sen-red lengths pal over the roller. It. and ltttwt tt the t-oth-r-. t." and lil, an oscillating dipper. l-'-. applies paste to them. I

.\ll.t|tt'-pttl't-' so fat tit-scribed are. those mmon to the type nl' machine illu-tratcd by way of example.

If a previous yprtuted roll of )aper. n.

m a machine as a ltwt' described t te taper would be .-ct initially .-o that the knii' If. would cut oil the lengthat positions itt correct relation to the printed matter or designs on the paper. It would be found, however, that with a fixed rate of feed the designs or printed tnattcr would oon luwnlt of register or position in relation to the knife. 1''. and the nuo-hiue would have to be repeatedly stopped to allow the paper lobe reset. 'Io mt'rcnptctlttH ditliculty our pl mes accelerates or retards the rate of feed according as the web tags or creep.-. For instance the drawing roller. l amt J. are motmted upon shafts, to and I? re'-'peeit. 16, a gear wheel. IR. is meant and this is driven from the usual train of gearing adapted to be changed acegrdinfto any predetermined speed or rate 0 e Tho-shaft, 17,, and tlugdrawin roller. '3, are driven from the shaft, ltt. am the drawing roller, 1, through the medium of a diL :terential gear. For instance. a bevel wheel 85, mounted upon the ahaft. to. or formed were em iloyed mounted within the work wheel. 37. the ptmons, 86, also meshing with and driving a bevel wheel, 88, secured to or tot-mediutegl'allv with a toothed wheel. 39, driving a toot wheel, 40, n ma the shaft. 17. of the drawing roller. 2. IL worm spindle. 41. calri in a bracket, 43, is adapted to he.- rotated by a handle, 42, or hand wheel, so as to rotate the worm wheel, 37, in one direction or the'other according as the speed of rotation of the shaft 17 of the drawing roller. 2. into be retarded or accelerated. In use the usual chan gear is arranged to drive apeed and the web is aet'in relation to the knife so as to, bring the printing in register. Then as creep or lag occurs the handle, 42, ta rotated in one direction or the other so as to retard or accelerate the speed of the roller, 2. f

The requisite tension is applied to the web by the tension roller, 1, hcretnbefore referred i to and also by a brake, comprising for inatanee a brake strap. .29, having one end sei cared to a weight 30. and the other end to t a hook ill, on a block 32. pressing aL'uitmt a grooved pulley 38 over w tieh the strap. :39

ll. t f' names is passed. varied by the weight, 30. and also by adjn.-tingthe bloelt'. 3:2. by means of a band wheel. 33. on the screwed spindle, ill. on which the block,ll'.?. is mounted.

'ith the arrnngenu-nt above described it is possible to make bags direct front a lift" vtously printed roll and to maintain the printed matter or design in correct po.-ition' or rcgi.-tcr during the cnlltillttntm running of Ila-machine, the requisite adjustment being readily aml quickly controllableby the operatorr lly .-nitabl v arranging the printing upon the web. bags may be made having prnttlng upon one or both sides. in one. two

or more colors or on one or both sides. lltt'l'eby etl'ccting great saving'bot-h in time and "laborascompared with thcttsual methods wherein bags are printed atter manufacture.

The invention is applicable to ttlttt'llitlcs for making the usual types-of ba for in- .-tauee. plain or tlat ba'gs with sit e or cete .tral N'tllltr. satchel sha|wdba; 's, andblock bottom bags of all forms.

'lhe l'llVt'lltlUIl is also applicable to bags having printing on one or both sides and whether made of paper or of any other similar material.

Having now described our invention what tube into bag blanks, means adapted to'normallv rotate the tnbeadvaneing rolls with a fixed velocity relative to that of the blank advancing rolls. and nntnnally actuated mechanism adapted to temporarily increase or decrease the angular velocity of the tube advancing rolls without interfering with the operation of the blank ad ancing rolls or permanently disturbing the speed of the tube advancing rolls.

'3. In a bag tanking nutehiue, the combination with constant-Iv rotated blank advancing rolls. of tube advancing rol s. and inlet;-

'nnttcutlv actuated severing nucha-nism an rauget'l between the two sets if rolls t'or severing thetube advanced into bag blanks. and gearing for driving the tube advancing rolls normally servin to drive said rolls at a constant speed re alive to the amt-(bot theblank advancing rolls, said gearing mcluding a manual y controlled adjusting mechanism whereby the angular velocity of said tube advancing rolls maybe temporarity increased or decreased without interfering with the operation of the nutchine o|- peruntnently disturbing the angular velocity of the tube advancing .roll.-.. i

ll. In a bag making nuo-hinc. tilt combinalion with the constantly rotated blanlt ad- The tension can, therefore, be

ancing rolls. intertilt) rancing rnll, of tube advancing ro l, and I neatly disturbing the speed of the tube ad- I intermittently actuated severing mechanism vanenig rolls.

arranged between the two t-("R of rolls for In testimony whereof, we aflix our sigm't- 20 severing the tube advam-ed into blanks, and titres in )resenue of two witnesses.

a train oLgt-armg connecting the blank ud- E )WARD ROBINSON.

vancin and tube advancing rolls whereby l WM. JOHN BENWELL.

the tune advaneing rnlbt are normally rol EDWARD CHARLES GROVEH. tated int a constant speed relative to thel GEORGE HARVEY.

n|nml oi the blank advancing; rolls. including 1 Witnesses to signature of Edward ltobin- .a pair of gears and ineha ng a nmnually non: controlled adjusting lllL'tllttIllStll for angularly ad'ustin one gear of the train relative to anot er 0 the train to te|n mraril in- Evnu'x Roma-sex, Eawauu Lawn Dun; Witnesses to signatures of William John crease or decrease the relative rate of speed Benwell Edward Charles Groves, and of the tube advancing roll. and blank ad- George ilarvey:

tion 0 the blank advancing rol s or permavancin rollu without tllfiiltl'lilll the opera- Fns'rna A. Roamaox.

l Ton Lu. 

